Answer:
M3
Step-by-step explanation:
MM7 typically stands for a Major Major Seventh chord, which is a four-note chord consisting of a root, a major third, a perfect fifth, and a major seventh.
The intervals between the stack of 3rds are as follows:
- Bottom 3rd = major third (M3)
- Middle 3rd = minor third (m3)
- Top 3rd = major third (M3)
For example, a C major major 7th chord consists of the following four notes:
There is an interval of a major 3rd (4 semitones) between notes C and E, an interval of a minor 3rd (3 semitones) between notes E and G, and an interval of a major 3rd (4 semitones) between notes G and B.